CINTRA  This is a great little timesaver.. when iDisk 'gave up' after 2 days of uploading my iTunes Music, I used arRsync to copy the iTunes folder to a 16GB Flash Voyager. It (2.5GB) took almost no time!

Needless to say I use it to sync a number of other items. There should be a donate button somewhere for this 'must have'..   
(Version 0.4.1)

CINTRA  I was going mad with iTunes opening every mp3 file I converted, and not being able to find where this action could be changed.

Then I came across a post in discussions advising use of RCDefaultapp..

This is a 'must have' for those who want a bit more control.  
(Version 2.0.1)